This is no Contest.
1970 Buick GSX Stage 1.
its the Buick-bodied Chevelle, but it has a far superior motor: The Buick 455. It had 510 Ft-Lbs as low as 2800 RPM. It topped everything of its class, 454, 442, 460, and 440s. It was the best.
And, it had a killer paintjob.
Oh and sorry for the necropost